VIENNA, June 20 (Reuters) - Austrian oil and gas group OMV has restarted work at its Nawara natural gas project in southern Tunisia, it said on Tuesday, after blockades had halted the supply of building materials and hundreds of contractors were removed from the site.

Protesters who blockaded oil and gas fields in southern Tunisia pressing demands for jobs and a share of the country's energy wealth reached an agreement with the government on June 16 to end a sit-in and allow production to restart.

"The blockades have ended. The restart of works at the Nawara project can be started," an OMV spokesman said.

OMV's Tunisian operations had an output of roughly 8,000 barrels of oil equivalent per day until May.

It is expected that this output level can be reached in two to three months after a few weeks of limited production.

(Reporting by Shadia Nasralla; editing by Jason Neely) ((; +43 153 11 2256; +43 664 390 6505;))